Being crossed up is both easy and hard to fix. The main problem is it initially feels very exaggerated which keeps you from moving your shoulders and head enough. Once you start to get comfortable with locking your legs in it becomes easier to move your torso without feeling off balance.
The line is just a matter of finding someone who knows it to tow you. Sometimes that's hard in level 1 with anyone other than a coach. As you move up there is usually someone a little faster who has the line dialed in enough and you can ride in chase.
2004 GSXR600 (Track)
2009 Ninja 650R (Street)